package com.atguigu.yygh.common.utils;

import java.text.DecimalFormat;
import java.util.Random;

public class RandomUtil {

    private static final Random random = new Random();

    private static final DecimalFormat fourdf = new DecimalFormat("0000");

    private static final DecimalFormat sixdf = new DecimalFormat("000000");

    /**
     * 生成4位随机数
     */
    public static String getFourBitRandom() {
        return fourdf.format(random.nextInt(10000));
    }

    /**
     * 生成6位随机数
     */
    public static String getSixBitRandom() {
        return sixdf.format(random.nextInt(1000000));
    }
}

